Apparatus for synchronously operating phonographs and kinematographs.



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APPARATUS FOR SYNGHRONOUSLY OPERATING PHONOGRAPHS AND KINEMATOGRAPHS.

APPLICATION FILED DBO. 17, 1902. H0 MODEL.

UN TE" STATES Patented May 10, 1904.

PATENT rrrcn. f

LEON GAUMONT, OF PARIS FRANCE, A SSIGNOR TO STE L. GAUMONT ET (3111, OFPARIS, FRANCE. 7

APPARATUS FOR SYNCHRONOUSLY OPERATING .PHONOGRAPHS KIN EMATOGRAPHS.

SPECIFICATION formingpart of. Letters Patent N0. 759,693, dated lliIay1Q, 1904.

Application filed December 17, 1902. Serial No. 135,469. (No model.) '7I To all whom it may cort'cerhl:

Be it knownthat 1, Lion GAUMoN'r, a citizen of the French Republic,residing in Paris,

. France, have invented certain new and useful Improvements. inApparatus for Synchro nously Operating Phonographs and Kinematographs,of which the following is a specification.

It will be proper to explain in order that the object of the presentinvention may be better understood, that in apparatus where thekinematograph is controlled by the phonograph it has beennecessary'heretofore to conple the kinematograph to the phonograph atthe precise moment when one hears the-signal, as a drum, bell, orwhistle, which has-recorded on the cylinder of the phonograph someseconds before the commencement ofthepiece. It is owingto the precisionof this putting-in motion of the kinematograph that one obtains aperfect synchronism tothe end of the piece between the reproductions ofthe phonograph. and the successive views of the figures which thekinematograph shows. In practice it is difficult to always coupletheinstruments at the precise moment when the signal is heard, and a delayof a fraction of a second even is sufiicient to-produce an appreciabledisagreement, which spoils the whole effect and which on account of thesynchronism persists to the end of the piece.

The object of this invention is to provide improved means wherebyimmediately after the starting of the kinematograph an absoluteconcordance between the effects of the two apparatus is effected. Thiscontrol can be obtained either by acting mechanically on thekinematograph or by producing a certain shifting of the collector whichputs the phonograph in motion and by which an electric current isprovided by a dynamo-receiver,

which must work the kinematograph. 'The shifting thus produced on thecollector by which the current is transmitted to the receiver givesplace necessarily to an arrangement of the kinematograph which rectifiesthe synchronism if it has not been established perfectly at the start. 1

In the accompanying drawings, illustrating the ring Q, and vice versa.

embodiments of the invention, Figure 1 is a sectional elevation showingdifferential gearing at the phonograph for effecting the concordance ofthe synchronism between itand the phonograph. Fig. 2 is a sectionalelevation of another mechanical device situated between the phonographand kinematograph for eflectingthe same object, Fig. 3 is a sectionalelevation of mechanical means for effecting the same object by shiftingthe collector at the phonograph about its axis. Fig.

4 is an enlarged cross-section of the collector.

Z, connected together by two satellite pinions a 6. These. two pinionsare mounted on'a ring Q, which can turn freely in suitable bearingaround the axis of the shafts Y Z when it is not fixed or stopped by theset-screw 0. If, then, at the starting of the kinematograph the ring Q,is fixed by its screw 0, the shafts Y and Zstart at the same time inconsequence of the engagement of the; wheels I J and w b; but if, theapparatus beingin motion, one un' screws the screw 0, thus disengagingthering Q, and if the said ringbe caused to turn one will effect arelative disagreement of the-two shafts Y and Z either in one directionor the other, according to the direction in which saidring Q is rotated,assuming that Y is the controlling-shaft, which receives the movement ofthe phonograph and which makes ten revolutions per second in-thedirection of the arrow f. 1f when in motion the ring Q is displaced inthe same direction as that of the arrow f, the wheel J, which turns inan inverse direction to the wheel I, will be retarded one turn on thewheel I for a half-turn of One can then thus easily quicken or slackenthe motion of the kinematograph not only. by a very small fraction of asecond, but also of several seconds. It is evident that this arrangementcan be arranged between any points of the mechanism which puts inconstant angular relation the movable parts of the phonograph, such asthe cylinder or disk and the parts which work the film of thekinematograph. It can equally well be placed near the phonograph inorder that the operator can control without having to go to the side ofthe kinematograph.

Fig. 2 represents another mechanical arrangement which can be placed atany point between the phonograph and the kinematograph. On oneof thetransmission-shafts U, which is divided on the line 00 ac, so as to formindependent shafts, is mounted a sliding sleeve T, which one candisplace to the right or left tiguous to the line at w.

placement.

by the intermediary of a collar V, which permits of said sleeve turningabout its axis. The collarV is actuated by means of a lever L, which maybe stopped at any point-for example, by means of a pin d, whoseextremity presses on a sector 6. The sleeveE is provided with a key g,adapted toslide in a groove formed in one part of the shaft U, so as toparticipate in the movement of rotation of the said grooved part of thisshaft U, while at the same time being capable'of longitudinal dis- Atthe other extremity the sleeve T carries a stud h, which engages in ascrewthread 70, formed on the part of the shaft U at the-left on thatextremity which is con- If now the sleeve E is displaced, for example,to the right, by means of the handle L, the part of the shaft U whichcarries the thread of the screw is must be rotated for a distance whichdepends on this longitudinal displacement in order to permit thisdisplacement. One will be able to thus differentiate in one direction orin the other by a portion of a turn or even by one or several turns thepart of the shaft U at the left relatively to the part thereof at theright.

In apparatus such as thatl have before referred to a collector isemployed to which the current is supplied by two rotating brushes, themovement of these brushes being transmitted in a perfectly synchronousmanner to a receiver. Now if this collector be rotated one or severalturns in one direction or am other a corresponding slowing or quickeningby-one or several turns of the receiver will be effected by the movementof the brushes. As these latter are in relation with the ph0-' nographand as the dynamo-receiver works the kinematograph one will produce inthis manner the desired agreement between the phonograph and thekinematograph. It is an arrangement of this kind which the accompanyingc awings represent in Figs. 3 and 4. The collector is represented at Cand the rotating brushes at D E. The wires which connect the collectorto the receiver would oppose the rotation of collector if they weregrouped in the form of cables; but to be able to produce the rotation ofthe collector (J, I connect each plate a: of the collector, Fig. 4:,by awire '5, which lies in a groove 7' of the shaft m, of insulatingmaterial, which carries the collector.

Each of these wires 2' terminates in a ring a,

which is fixed on the exterior of the shaft m. There are as many rings10 on the exterior of the shaft on as there are plates w on thecollector c. On each of these rings 12 is applied a brush connected tothe corresponding wire of the dynamo-receiver which works thekinematograph. On the extremity of the shaft 1 m is mounted abevel-pinion p, which engages with another bevelpinion q, fixed to ashaft 9*, provided with a milled button 8. By turning this button in onedirection or the other one causes the collector G to turn and oneproduces thus the desired disagreement under the previously-explainedconditions.

It is evident that instead of arranging the rings on the cylindricalsurface of an insulat- --ing-cylinder m, as I have just described, one

could arrange concentric metallic circles on an insulating-plate, thebrushes being in contact with the said rings. To avoid sparking from theextra'current when the brushes pass between the successive plates of thecollector, (see front view of Fig. 4,) I arrange between these plates (0two to two a resistance u without self-induction which one obtains byrolling together two insulated wires whose extremities are connected.

I claim' 1. In mechanism for driving a kinematographsynchronously fromand by a phonograph, hand-operatable means between said instrument forcorrecting and altering their synchronism when the kinematograph shallnot have been started simultaneously with the phonograph.

2. Means for correcting and altering the synchronism between aphonograph and a kinematograph, which consists of a drivingshaft, analined shaft driven therefrom, a bevel-wheel I on the driving-shaft, abevelwheel J on the driven shaft, a ring Q rotatable about the meetingends of said shafts and concentric therewith, a set-screw c whichsecures said ring against rotation, and a bevelwheel rotatively mountedin said ring and gearing on opposite sides with the respective wheels Iand J.

In witness whereof I have hereunto signed my name, this 1st dayofDecember, 1902, in the presence of two subscribing witnesses.

LEON GAUMONT.

